.fill{
  flex: 1;
  text-align: center;
}

.header-container{
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  align-content: center;
  width: 100%;
  background-color: yellowgreen;
}
.material-icon{
  line-height: 1px;
}
